The following is a list of web links for agencies, publications and services that provide information and assistance to those who work on heritage buildings and renovations, and for general occupational health and safety in Canada:
OSH Answers - Searchable, "Easy-to-read, question-and-answer fact sheets covering a wide range of workplace health and safety topics, from hazards to diseases to ergonomics to workplace promotion"
Slate Roofing Contractors Association of North America - The Slate Roofing Contractors Association of North America, Inc. was originally formed in Pennsylvania in 2005, then incorporated as a non-profit trade association in 2008, with members on three continents.
Health Canada - Government of Canada body responsible for designation and classification of materials, substances, environments or foods that may affect human health.